If you could spend $500-$900 on an Acoustic Electric with cutaway as a second guitar to your LV-03RE and buying online is the only way possible for you what guitars would be of interest to you?

I'm not sure...  I'd be looking for something in the $400-$800 range and a K&K pure mini, though.  The real trouble is the difficulty in finding an acoustic guitar with a cut and no pickup.  I think I'd focus on Breedlove and Taylor (not necessarily in that order) for new guitars with pickups already installed.  I'd be sure to scour every used rack within driving distance, too.

Ed

I'd look for an older Larrivee LV or OMV 03.Its hard to find any others in that price range without a pickup system already installed.I will say if you can find a Stagg{I own one} its all plywood but a nice guitar that sounds the same whether plugged in or played acoustically.

I'd keep an eye on this guitar on e-bay:
http://cgi.ebay.com/Tacoma-EF21CE4-Little-Jumbo-Acoustic-Electric_W0QQitemZ140390414756QQcmdZViewItemQQptZGuitar?hash=item20afebb9a4

I would buy an OMV-03 and install an iMix.

Oddly, I was recently looking for a "second" guitar (third, fourth, fifth, or sixth depending on what and how you count) with a similar price range and ended up buying a new LV-03RE.  It pushed me a little bit on the cost, but not much.  I looked for a couple of months and considered many options - came very close to picking up a S&P Showcase toward the middle of the price range, but when the opportunity for the Larrivee came up, I knew that I was not going to find anything to match the value combination of tone and hand crafted quality at that price.  No-brainer.   Oh, and while not an on-line click to buy from a big box store, I looked at many on-line deals and contacted a few dealers by email and phone before coming upon the "you can't beat this" deal.