Assumptions? Nah, just responding to your "won't mind being corrected".
As noted and in response to your statement that "more gas, more power", it just seemed you didn't get the basic idea of an internal combustion engine. It might be true in a steam engine that "more steam more power", but that's not what goes on in an internal combustion engine.
Having said that...
I've spent a fair number of years encouraging customers to NOT over-carb their engines. We Americans seem to be in love with the idea of re-engineering good cars by reading product advertisements and bolting on parts. Usually, this is counter-productive.
I recall many VW customers coming in to the store, buying twin two-barrel carbs, a big cam, huge cylinders, and putting it all together on a Bug with huge rear tires. Most never drove the cars more than 100 miles as they were useless as vehicles.
In your case, the smaller-than-typical venturies probably make it a great stop-light launcher, and very well behaved around town. A great choice if that's the kind of driving you do. As other posters have noted, and the guidance provided by widely circulated Weber/Alfa literature, our engines behave extremely well with more venturi than you have. By "well", I mean with great around town driveability, good gas mileage, and a fun enough top end. If I were converting a stock 2L to Webers, I'd just copy the Euro spec and carry on. I think they used 33 or 34s, but don't trust my memory on that.
I've got 33's in my 2300 (the Brazilian version of the early cast-iron 2000), and it is a sweet heart to drive. Verrrrrrryyyyyy tractable around town, but able to hit 115 on a straight. I'm in the process of bumping the cam a little, converting to 45DCOE's from the current 40's, and will start with 34 venturis and go to 35's if they behave themselves. Maybe even more if it still works for in-town driving.
Having said that.... I recall being stopped by a highway patrol on Hwy 59 in Montgomery County, Texas about 2 in the morning back in 1978. I wasn't speeding. He just didn't like the look of an all-black Alfa Sprint GT at that time of night. It probably got him interested when he saw that it was lowered, had a 5-point harness, and clearly meant to go fast. He got really excited when he discovered that the only things I was carrying were a toothbrush, comb, change of underwear and shirt, a 12 gauge shotgun, a 218 BEE varmint rifle (with scope), and two boxes of 38-40 pistol ammunition, but not the pistol. He gave up when someone shot past doing about 90, and I pressed on with my trip to Indiana.
So - having a too-fast Alfa in East Texas might work against you.