Thats a little low , but not drastic. I'd recommend changing the oil more
frequently since you've been running alky. The alky has a tendency to attract moisture in to your crankcase, thus thinning the oil.
I did away with alcohol last year.....and my oil has never gone more than 300 miles at
the longest without being changed. Not because I'm an oil changing nut, but rather because I need to drain it for repairs like every 5 minutes. I'm putting a new oil feed line on the turbo and doing away with my current oil pressure gauge, the lines to which are huge and likely help to lower my oil pressure. Plus, having an oil might contribute to the low pressure as well, right?