I've wrestled quilts around on my Juki TL98Q, a great machine for FMQ but I use it for nothing larger than a twin size. It's just not worth the struggle. To me, sending quilts out to a longarmer is money well spent. and usually not as expensive as you might expect. Saves you loads of precious time and you can check their work before you give them your quilt, for prices, turnaround time, etc. Get references from friends or shops if you can. Oftentimes the batting and sometimes even the backing is included in the price. I'm a convert!
As for owning a long-arm machine, they take up HUGE amounts of space and are quite complex to use. I bought one thinking my extremely handy husband could put it together and it was just impossible, so we sent it back.
As I always tell my husband, "Do it the easy way, not the hard way!"