Since 600's and 1000's use the same chassis theoretically the 600 would be safer on a bigger track because the speeds would be somewhat slower. Your schedule is pretty spread out so I am not sure you could get a large amount of cars traveling for that purse structure. Dont get me wrong it is decent money if you have a group of cars close to a track, but people will not travel for that money. MMSA pays $1000 to win and $150 to start and I wouldnt travel more than an hour and a half for that. Although travelling with a series like that may draw interest from people wanting exposure, most mini sprint owners are racing a mini sprint because their job and financial situation doesnt allow them to travel all over the place racing. They get one to run affordably at a local track for fun. This is just my $.02.