I don't mind spending a little extra if it will make my horse feel better. I'd prefer to keep it under $100 because if when she fills out and gets the shape she should be I would need a new saddle if the current one doesn't fit anymore and I know that will cost much more than I paid for this one.
Would it be ok to just walk for about 10-15 min on her off days?(We work on ground work a little everyday, she has already learned to be patient.) If we stay in the round pen she keeps it quite slow. Also I have heard that walking or trotting in too tight of circles can be bad for their legs? I have a 24' lunge line for her work days but the round pen is only 80' diameter. Is that an ok size circle?