oh how nice to be getting a birthday wheel!
i have to say that i think it may be best to actually try out a few wheels..perhaps there is a spinning shop or guild in your area where you may be able to.
every wheel is different for every person.. so it's hard to say which would be best..single or double..left or right..it's what is most comfortable for you
i've heard many times though that double treadles are good for beginners..but i learned on a single and i love it.
there are a bunch of nice wheels in that same price range ..the hitchhiker, fricke, babe, heavenly hand spinning.. is what i can think of right now.
the hiker i believe is the most portable out of those the ones.
and before i decided on my 2nd wheel i watched alot of youtube vids of people using the wheels i was interested in
okay my brain is foggy cause i need a nap..heh.. i hope that helped a bit