Recommendation and ideas about my planned cycle of ostarine only

Hello everyone To keep it short i wana do a ostarine only cycle for about 8 weeks with 25mg per day. After this time i planned to take mk 677 for 8 weeks 12.5mg per day to secure the gains from the mild suppression from the ostarine. But i would also like to take something for the estrogen so they don't tank as well. Sadly im not in a position to get real gear. From my research this is the best compromise i can do. What do you think about it and or what could i take as well thats freely available in the internet to get the best results with the least downsides? Btw im already 28y old and im training consistently since over 10 years. I made alot of gains in this time. 84kg on 179cm with about 14% kfa.