When it comes to a bed, the firmer the better.  I had actually bought Cadence a new bed, two weeks prior to her diagnosis.  She was getting older and I figured a firmer bed would be better for it.  After the amp, I was so grateful I had bought the bed.  When she tried to sleep on one of her other beds, (she has 5 around the house) she really had a hard time getting up and out of it.  The firmer bed gives them more stability, so when they stand, its easier for them to get up.

Personally, I highly recommend the ramp.  I have a smaller SUV, but I didnt want to chance her hurting herself when she jumped in and out.  We already had a ramp from when she is a puppy.  I think my boyfriend got it at Petco.  For the first couple of weeks my boyfriend lifted her into the car, since she was till unsteady and we didnt want her to fall off the ramp and then get scared or hurt.  But when she was more confident, she flew up that ramp.  I would give her a treat when she went up it, so I think it helped.  Now she is like an old pro.  Hope this info helps.  If you have any questions at all, please do not hesitate to ask.  Everyone here is so very helpful.  We are all on this journey with you.