good questions - which DPE/what aircraft are you using for the practical test - I presume single engine as ATP ME requires the CTP.
By the sounds of it those are light sport hours, so the category would count. You would need 50 in category/class for the rating sought.
Also the prerequisites - 1500 TT, 500 X-C, night etc
I trust you are registered on IACRA? That is the 8710 system. Paper forms are rare these days.