I don't bottom often, but when I do, I like to keep it below 7.5"! You may want to contact Ashton. He claims to be 7" but I believe he's more a hard 6" He can be slightly slow to warm up, but he's a very nice guy. PM for more details if you wish.
EscapewithAshton - Pornstar Performer, Rentboy, Gay Massage in Washington, DC | RentMen
RENTMEN.EU
Pornstar Performer & Rentboy in Washington, DC - EscapewithAshton: Escape With Ashton