I can see not rooming with total strangers... I am fortunate to have made some trusted friends with whom to share, because in addition to their companionship, things are getting very pricey, and this has helped those of us who couldn't afford the trip otherwise.
That much being said, whether going solo or not, one more thing to try is to work whatever you have in the way of "miles" credit cards, hotel membership cards (like Marriott and Ramada, which you can sign up for online), AAA membership cards, the better travel websites. For example, I found it was about $75 cheaper to fly from Providence to LAX and catch the Super shuttle to Burbank, than going directly to the Burbank airport from either Providence or Hartford, my nearest airports. Also it's cheaper to get either an extremely early or late flight, at least on one half of your round trip, preferably with a stop or two on the way.
Also, how willing are you to rent a car or take a taxi from a less expensive hotel to the convention every day? These are the kinds of things that you'll need to consider.
Hope to meet you there.
