I think cracking the £30k price point would be a major task due to the hand-built nature of Morgans and the fact you'd use aluminium panels (presumably) to clothe it; yet at more than 30k I think it may have difficulty selling in good numbers.
The 1.6 is a cracking engine, easily capable of 200bhp and 200lb/ft. If you had a target weight of 800kg I imagine performance would be rather spritely - a Cooper S will do 0-100 in 16.5 seconds (thereabouts) and that weighs 400kg+ more. Given how chuckable that is it would be a LOT of fun.