Thanks for including your compression ratio and cam specs. Also important are your preferences for drivability. If its a 'track day' car, your tuning might favor wide open throttle WOT. If a large percentage of (80%+) your drive time or miles is daily drive or touring you should favor tuning for that use.
Once you realistically determine your intended use, then select the right size carburetor (butterfly (throttle plate diameter). Then invest in 4 chokes the right size for your use. Smaller chokes give better low rpm response. I have found these books to be helpful in selecting the correct sizes:
"Tuning Solex Carburetors for Performance" by R C Pack
"Weber Carburetors" (Owners workshop manual) Haynes Publishing
Since you are in the 'about to install dual carbs' part of your project, you should consider in investing in an A/F ratio guage and installing the required oxygen sensor in the exhaust collector after the 4 into 1 merge.
I have been fine tuning Fiat and Lancia Weber carbs for 15 years using these techniques.
Feel free to PM if you desire to explore this further.