How many row planter?  That may make a difference on you options.  With 12 row you have a lot of options, 16 row a fair number, 24 row less options since they came out later.

Edit to add:
You could mount a 60 seed cart on the planter like these guys did:
https://talk.newagtalk.com/forums/thread-view.asp?tid=718463&mid=6121355#M6121355