Floorpan replacement questions
 

I'm ordering a passengers full floor pan, drivers long floor pan, both toeboards, passengers seat platform and front replacement torque boxes for our 67 coupe in the next few days. I've looked at a number of websites showing the procedure yet I still have a few questions.

[ol][*]What size holes should be drilled for the spot welds?[*]How far apart should the spot welds be?[*]Has anyone done a solid weld around the entire floor after spot welding for additional strength? I was asked this questions and didn't know. Would it be worthwhile running a full weld or just seam seal it after the spot welds?[*]The passengers front frame rail has come up through the missing floor about 3/8" since the floor has completely rusted away. The rail is straight just tipped up slightly. Whats the best way to correct this before doing the floor pans?[*]I'll be adding sub-frame connectors and was wondering if these should be done before or after the floors?[*]I'm guessing that because of the weakness due to the rusted floors that we should not put it on a rotisserie until after the floors or repaired correct? Once the floors are done we can pop it up on a rotisserie for media blasting.
[/ol]I'll be doing the welding myself with my father and have a professional who will be coming by to give me a few lessons and pointers. I could have him do it pretty cheap however I want to do as much work on the car as I can myself.

Any other pointers you all may have would be great! Thanks.