Get a used 35 gal drum and a cheap piston pump if you just have to have a pump.
That pump on that 30 gal transfer tank is probably about a $90 pump.
I don’t know where your from but where I’m from spending $90 to pump 30 gal is a waste of money.
They may call that tank a storage tank but it’s actually a transfer tank intended to transfer fuel from your main tank which is generally kept outside to inside where you need small amounts.
Transfer tanks are more dangerous inside a closed building than a sealed drum because they are designed to vent fumes, a sealed drum wont vent fumes.
Little advice, take it or leave it.
If your gone from your house for a few days you’d be well advised to move that transfer tank outside or you might not have a house when you come back.
Your concern and advise is noted. Thanks