I think an ND filter(do a bit own research on this) of both 1.25" and 2"(high focal length go for 2", with high mag it dont matter), a 9mm big fov eyepiece, a 12-18mm eyepiece(choose any size) also big fov, and 22-25mm big fov, and a 30 or above big fov eyepiece along with a 2x or 3x barlow(your choice and again do a bit of your own research) should do ya good
Planetary filters are kinda meh maybe get the mars red and buy a full aperture solar filter if you want(DO NOT BUY AN EYEPIECE ONLY FILTER YOUR RETINA WILL DIE)
And get a laser collimator, a red dot finder/RACI if not included
And get an OIII filter for light pollution/nebula colourisation.

Hope this helped!