here is my guitar:

http://images.music123.com/products/original/Baja/228731.jpg

its a cheap one, i know. thats why im taking it apart.
has 1 volume, 2 tones, 5 way pickup selector, 3 Single Coils.

i bought two humbuckers taken from an ibanez rg320 on ebay.
also got soldering iron.

here are my questions:
1. can i cut a humbucker hole where the bridge is and fit my bridge humbucker there? if so how? approx measurements? (no fancy tools)
2. if i fail with number 1 and have to buy a pickguard, will the strat style with 2 humbucker holes pickguard fit this guitar?
3. if #2 works do you recommend i use the 5way pickup selector to go with my 2 humbuckers or i just buy a 3 way selector?

thank you for reading. i just don't know electric guitars but i want to know. please don't tell me to buy another guitar, would take a year.