I noticed your from Australia. Whats the fuel prices there? Reg. unleaded is just under $4.00 a gal. here. and VP 113 is $380 a drum. Sorry, just curious. On your question, alcohol will work fine with a sheetmetal intake. And if your not going to run for a few weeks its best to pickle your system. You can do that by simply running racing fuel thru your system after running alcohol. Youll be way rich because your jetted for alcohol but it wont hurt anything as long as you dont run your engine very long.
good luck