In the booster seat

This question is related to Propgator’s post, but different nonetheless. I am building a 16’x17’ N scale layout with 100’ of mainline and 300’ of total track (yards, industrial tracks, staging, etc.). I am powering this baby with Digitrax Empire Builder (5 amp). I will have a total of 12-15 locomotives on the layout, though a miximum of 6-8 running at any given time. My question is how many power boosters/districts do I need. I am sure this is too much for the single 5 amp booster included with the package. Is 2 enough? Is there a formula for the approximate length of track/number of locomotives you can run per amp of boostsr power? Help me out here folks. [8D]
Ron

10-12 loco’s per 5 amps, so you could get away with 2 blocks, but by the size, i’d say go 3 or 4.

Jay.