High training, owning their own stadium and decent average attendance with scope to improve will help. With a decent income they can maintain the training facilities and get a decent wedge of the best regens.
After that not sure what you could do bar have future transfers set up of decent players
To cause a demise do the reverse, money (or lack of it) is the quickest way to have a team drop down a few divisions. Plus with poor youth players and not much money they should start to drop off. Poor players on really long contracts bit of a cheat too.
Bar high interference and low patience the chairman's role hasn't huge benefits. Remember to make them young enough to last, if they retire a new board could take over and spoil things. Low resources should help, so the chairman can't repeatedly bail out the club but there's no significant testing about to prove their impact for a financial POV
Having brilliant staff with high ca/pa and decent attributes will have the bigger clubs come circling for them. Even though if I'm not mistaken attribute numbers will be more appealing in terms of coaches and scouts than ca/pa to the AI clubs