I had a similar problem, I am a tiny person, my hubby is 6'4" and 240 lbs. He had to sleep corner to corner to keep his feet on the bed and I HATED that "falling into a hole" feeling. Keep your bed frame that you love, just have a handyman extend the length of the frame to accomodate the extra long mattress that you require then put a thick, solid wood bottom in the frame with a center support, probably 3/4" plywood will do the trick. Be sure to have the new wood primed and painted using a low VOC paint and let it dry for a couple of days before installing to keep the raw wood and paint chemicals from off-gassing into your bedroom. Next, go to United Mattress Company in Denton, TX, to purchase your mattress. They are extremely knowledgable and can help you with picking mattress materials that are best suited to your needs. They will let you see/feel the materials and decide for yourself what you want used as a topper for the innerspring as well as the finishing fabric, then they will custom make the mattress for you right there in their shop. They are very reasonably priced, better than any sale at any mattress store that I've shopped. I've had very good experiences with United Mattress Company and highly recommend them to anyone. By the way, a "box spring" no longer contains springs, it is simply a box made of wood slats and covered with fabric. A pedestal base bed, or solid bottom bed frame, works the same, no "box springs" required for anything other than a height adjustment if the pedestal and mattress are too low to the floor for your comfort. In addition, mattresses are not something that you can comparison shop "apples to apples," they are basically all the same but are manufatured for specific retailers bearing the retailers trade names, no two stores sell the same "brand name" of mattress, just different qualities of mattress. If you need a handyman to modify the bed frame and build the bottom, Drew Martin @ ###-###-####, is local, does high quality work and can provide references. As someone else stated, you will either have to special order your sheets for an extra long bed, or, speak to local alternations business people and get bids for altering regular department store sheets to fit your new mattress. I found that the alterations way is usually cheaper than ordering custom sheets. I purchase 2 flats and 1 fitted or 3 flats, then they use the extra "flat" to alter the length of the other two. Be sure to coordinate your required mattress length with your handyman so the modifications to the bed frame match the length of mattress you purchase. Good luck and good night!