what would you suggest as a sufficient enough br for the following levels of nl cash

5nl?...for a TAG? for a LAG?
10nl? for a TAG? for a LAG?
25nl? for a TAG? for a LAG?

is there much difference in the amount of buyins needed depending on your style of play?

when would you suggest taking stabs at higher buyins once u have 40 buyins? 50? 75? 100?

ill be running 4-6 sometimes 8 tbls at a time

anything else you think is beneficial to a new 6max cash grinder?

any suggestions/oppinions/advice/links to articles, anything at all is greatly appreciated..

ty in advance