You might want to cross post this in the boro section.
I only have limited experience with soft glass but that big of boro sounds like serious oxygen consumption so I suggest also shopping for major concentrator(s) while you're at it.
ETA: You might want to consider home filled tanks while you are at it.
The purity is down some 5% from commercial tanks but having the ability to dump major amounts of heat in when you really need it can make it all much more fun and a lot less frustrating.
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