Aftermarket Wheels "Tuner" Lug Nut Spline Size and tire thoughts

Bought my 2017 Raptor with some Aftermarket Method Wheels. Truck vibrates noticeably on the HWY. Did some research on here about "Road Force Balancing". Took it to the local Tire Plus and dropped it off. They couldn't get the wheels off due to the "tuner" style lug nuts that were installed. They were spline and the typical Hex head. Is there a standard size for our trucks or am I just going to have to order a couple different sizes and try myself? I can take photos if that helps. Oh and the vibration? Previous owner didn't rotate and guess with only 36k mileage didn't have an alignment so the wheels are cupping causing a vibration. So what I might do is purchase the lifetime alignment. Get it aligned now. Ride these tires till it becomes unbearable on the HWY and then purchase some new 35x12.50r18 and have it realigned. Has Nitto Exo Grappler AWT currently but might go back to the BFGoodrich KA02. Thoughts or recommendations on next tires. I like the idea of 50k mileage rating as this truck is driven more on road that off road.

Should be a 19mm for those. The stock lug nuts are a 21mm. The impact deep sockets can be tight because of the men clearance between the nut and the wheel, but a std deep 19 should work fine