Hello Fenderbender, welcome to the forum, hope you find interesting discussions here and helpful advice. Nice looking body you have to start with, looks like a flamed maple top, so the pressure is already on to do a good job LOL!
The first thing that comes to my mind, you say you want P90's but the body appears to be routered for a Humbucker at the Neck and Tele PU at the Bridge. If you want to go ahead with P90's things will be difficult from the start because it would require extra routing and will leave gaps. P90's are longer and thinner than Humbuckers. I would suggest using Seymour Duncan "Phat Cat" pickups. They are Humbucker-shaped P90 style pickups that will slot straight into the neck and you can get Tele bridges made for Humbuckers
https://www.ebay.com.au/itm/185652470690?chn=ps&_ul=AU&_trkparms=ispr%3D1&amdata=enc%3A130YWYHh-RQ6BzJP_A5nmWA15&norover=1&mkevt=1&mkrid=705-139619-5960-0&mkcid=2&mkscid=101&itemid=185652470690&targetid=&device=c&mktype=pla&googleloc=1000653&poi=&campaignid=15984321586&mkgroupid=&rlsatarget=&abcId=9300814&merchantid=664028163&gclid=EAIaIQobChMIsv2_ybm9_gIVSLaWCh0mKQJZEAQYASABEgKfAvD_BwE