The answer: arm myself with whatever I can find
the plan goes something like this, in a perfect world:
1: Locate a tall building. Anything will do, but tall enough that the roof is fairly inaccessible. Before going here, I would find a source for some thermite [aluminum powder and iron oxide powder] or an oxy-acetelyne torch, like a construction site.I would proceed to seal all entrances and exits from the roof including the fire escape, leaving a defensible large platform to operate from. I would have a back-door, which would be a single rappelling line to a vehicle in case of dire emergency.
2: food, water and other necessities. I would plan for two weeks of unsupplied operation. That means two weeks of imperishable food, preferably MREs due to the ability to eat on the go in a battlefield situation. Two weeks of water, at approx 1 gallon per day per person would be about 15 gallons worth of drinking water. I would not trust tap water, as it is one potential source for the infection. Several radios, including at least two high powered 2 meter hand-held radios, a weather radio to receive EAM communications, and perhaps a CB type radio for communication and coordination with other survivors. Night vision goggles would be nice, but are not necessary. Most important would be spare batteries for the radios, enough for four weeks of continuous operation. A cellular telephone might also e useful, in case the phone system still works. Also required is a good pair of binoculars, a signaling mirror, warm clothes, several sets of clothes, rain gear, a shelter, matches, and other various survival equipment.
3. Weapons and ammunition. I will not go for the bludgeon/cutting type of weapons. They require too much skill to operate and the enemy [in this case, zombies] gets much to close to you, considering the fact that they can 'kill' you with a bite. My preferred long range weapon would be a M-14, with a low-power telescopic sight. The sight mounts on the m-14 still allow the use of iron sights, and the telescopic sight would have many uses besides being a sight for the weapon. If I could get my hands on a M-4 or M-16 I would not leave it behind, it would be a potential backup weapon, and a primary when on the street. A shotgun would be a must if the fighting got a little more intimate. I would probably use a M4 Super 90 [m1014] semi-automatic shotgun, if I could find one, otherwise any pump-type 12 gauge shotgun would fit the bill. The benefit of the semi-auto would be a quicker follow-up shot, but nine times out of ten that is not required. I would carry a .45 caliber sidearm, probably a m1911a1. A combat knife would also be a must, but it would probably be used more as a general survival tool rather than a weapon. I would acquire as much ammunition as possible, with at least 200 rounds of 7.62mm NATO for the M-14, 100 12-gauge shotgun shells loaded with buckshot, and 100 rounds for my .45 (the last being for me).
The Plan: Go to the aforementioned tall building, pausing while en route to gather weaons, ammunition and supplies as needed [mostly weapons/ammo]. When I arrive, I would clear a path to the roof and the roof and close the door behind me. I would use the thermite to weld the door to its frame [preferred] or to fuse the hinges/doorknob/lockset on a wooden door, sealing the door ehind me. Whatever thermite I did not use would go towards cutting off all fire escape access, trapping me on a roof. I would place my rope/rappelling gear in the correct spot, hookedto the structure of the roof but with the rope still coiled on the roof. This would be an incredibly safe, secure, defendable location that I could wait out the next two weeks in. I would attempt to use my weapons as sparingly as possible, so that I would conserve my ammunition.
Unfortunately, even if I did survive it would be a Pyrrhic victory of sorts. I guess that's just how it goes though.