Do I need a bigger radiator for 450 HP Stroker with Vintage Air?

[derotoreut]

I am putting in a new 383 stroker engine and also installing a Vintage Air system at the same time. Currently I have a 3-row radiator. I want to be sure I have adequate cooling for this engine. I have read that the condenser for the Vintage Air system causes some strain on the cooling system, and some guys have had to change out the radiators because its mounted in front of their radiators.

Here's the deal... currently my 3-row radiator does NOT have cooling provisions for my TH350, so the PO installed a tube/fin cooler in front of the current radiator. That's fine without the Vintage Air installed. Vintage Air says that only their condenser should be mounted in front of the radiator. So, if my current 3-row (with Vintage Air) is adequate enough, I still have to get an auxiliary trans oil cooler. What to do?

I also spoke with a guy at Derale Performance about the trans cooler. I explained exactly what I was doing and he suggested using a PN 13950 cooler.
http://www.summitracing.com/parts/DER-13950/
He also said it would be best if I could run it through the radiator first, and then this trans cooler. Thats great and all, but I am also concerned about the overall radiator cooling for a new engine. So...

1. Do I need to replace my current 3-row radiator with a 4-row radiator?
2. If I need to replace my radiator, is a stock 4-row adequate or should I go with an aluminum racing type? I've heard that they're over rated.
3. Should it have provisions in the rad for AT cooling? Or use the aux trans cooler?
4. Should I replace my current 4-blade (non-clutch) stock fan?
5. Should I install an electric fan?

Thanks for your help.