Are you just wondering about getting an ink bottle that has a wide enough opening to comfortably get a big pen into? Goulet sells empty ink bottles for a buck or two each so you could get a wide-mouth bottle and decant other inks into it if needed.
Empty Fountain Pen Ink Bottles[/QUO
I want to get a big bottle, and a small bottle, the small bottle will be for work,on a classic wooden desk, which according to finance cost about 2.5k. need a bottle which doesnt look like a kiddy safe bottle ,but can still be used with a pilot metropolitan, jinhao x750, twsbi go, jinhao x450. desk looks kinda like this,
If you are very brave you can stand a Quink bottle on its edge, or lay it down in a metal ring, something like a bangle. Must admit that I usually just pour the ink into an MB shoe or, best of all, a Lamy dimple style bottleQuink bottles are large enough for the 159. If you can find some with the older style label font.
I don't see the 80ml bottles as problematic, personally. I use Diamine almost exclusively and haven't had any problems using up to an M1000 size in them.
If anything my concern now is depth considering the size of some nibs.