Spending enough time of course he can reach that BP as a f2p. However in his server, compared to the people who are p2p or p2w he probably gets destroyed.

Against other younger servers a f2p that has been playing for longer can beat p2w since the age difference of the servers gives him an advantage. However playing for the same amount of time a f2p can't hope to beat a p2w. He can however get any rare ninja, except for Tsunade hokage who so far has been ingots only.

Just because he has 70bp does not mean he is not f2p or that he has no rare ninjas. However its untrue that he can contend with any paying players (aka get top 3 spot in cross SWB or time space). Unless all paying players from his time have already quit the game.