Maybe some explaining here in another forum are helpful: The Bodhisattva path in the teachings of the elders
How ever, the advice of Nana "The safe bet would be to keep practicing the perfections to the best of one's abilities." is the best way one can do, where ever he is without the mistake to build something up on speculation and it's very important to discover the own intentions which move to the will of becoming what ever the object might be (for the arahant as well as a Buddha the last final object is not to become anything at least, which has to go throught a noble desire). There is so many tanha (desire) hidden in motivations, one would not see if the mind is not trained yet and selfhonesty (better appamada
) not jet established.
A good essay might be also: Freedom From Buddha Nature
Buddhist practice means to be mindful of the present step and not speculating about hills, brigdes, dangers... in the future. Importand is, to start to walk and the more one focus just on the next step the bigger is the capacity of range. People who discuss and waste time in philosophy do not reach anything, the just live in a world of ideas.
One is clear, the path to gain arahanthood (free of suffering, hunger and thirst) or a Buddha (free of suffering, hunger and thirst) is the same. To really help others, how ever, one must be free of greed, hated and delusion first by one self. Not knowing the path well jet, it is how ever good to follow the advices of one who has gone so fare, and those advices are still avalible to day.
The Arahant/Buddha/Bodhisattva discussion remembers often on children, but in fact does just reflect the same as any other struggle in the world. In actually struggle with each other they use to ague with there daddy or they daddies possession "MY daddy has a bigger car then your daddy".
The more one seriously pratice, the more things grow clear and what ever motivation might insire you, "transform" it into energy of serious and honest pratice like told by the wise. One can not fail if there is always appamada present.