I plan to upgrade my 1000D with a R7 for Christmas.

I recently have bought EF lenses and don't know if I have to change them for RF lenses instead.

Here is what I have : - Samyang 8mm F3.5 Fisheye (for 360 Panos) - Canon EF-S 10-18mm F3.5-5.6 IS STM - Canon EF-S 18-55mm F4.5-5.6 IS STM - Canon EF-S 55-250mm F4-5.6 IS STM - Canon EF 50mm F1.8 STM

I have multiple bundles choices for the R7 on kamera-express (I live in Europe and seams to be a serious dealer) - R7 body : 1298€ - R7 EF-R adapter : 1398€ - R7 RF-S 18-150mm F3.5-6.3 IS STM EF-R adapter : 1789 € - R7 RF 100-400mm F5.6-8 IS USM : 1889€

On the other hand I can just take the body and buy a used adapter ring on MPB but here another question: Simple adapter : 89€ (used as new) Adapter with control ring : 144€ (used as new)

What would you do and why ?