Originally Posted by BearX220

With a normal luggage load the Tube is great for getting into London... cheap, 45 minutes to the heart of town, and you're assured of a seat as the Piccadilly Line starts at LHR. Plenty of Londoners do it all the time. A 930a arrival means you'd hit the train platform at 1015a or 1030a... well after morning rush. So I have to disagree with jerseyfinn.

But the OP's is not a normal luggage load... with two giant 50-pound check-thrus plus a carry-on, you're going to get killed in there. I don't know how you'll negotiate the escalators at Green Park with all that stuff. I don't even know how you drag it all down the street without ramming people or hurting yourself. So, do a minicab, or ask the hostel to lay on a transfer service for you.