If you were a government agency the i'd reccommend you use the most complicated fuel injection system that has the most amount of wireing, brain boxes, special pumps/filters/returns, get the internet-ready download compatable system that money can buy and a team of engineers/consultants/personal cunsultants to help you thru the adjustment process.
Since you are a regular guy i would reccommend a carburator and a nice screwdriver to get you thru the adjustment process.