Under sized carb for initial start up/break in.

Hey everybody hows it going? Happy Moparing to you.
My question is, can I use my 450 cfm four barrel for my enitial start up and break in? the 450 is way undersized for what I need after the fact and I'm trying to trade a 650 summit DP and this Edelbrock 450 AVS2 for about a 750 cfm DP over on the pages for trade section but just in case I cant find a trade and want to start this monster can I use this 450cfm? the 650 summit has been sitting for about 4 years is why im opting for the AVS2.