I am sorry for the loss of your dad. Even when parents are elderly, it is a great loss when they are gone. I get the sense that you held back from letting it all out before because of him-and only him. If the loss of all your old friends and aquaintances-the shunning-would not hurt you then there would be no reason to not let your secret out. You still have siblings in. And children that have family connections-I assume-since you still associate with your brothers at this point. You might want to reconsider for their sake. Although, if they are adults and out of the org., I don't think they can be anything but mildly embarrassed about the notoriety. In that case-go for it. If you care about your bros., you might want to rethink. You've been around, and you know you really have to weigh your personal/family priorities here. If you hesitate because adult children don't like the idea. . .well, parents and children embarrass each other a lot sometimes. It's not like you are going on Jerry Springer or marrying your sister. Do what YOU need to do if you won't be harming anyone else. If you will be, consider the degree and if it is harm or just embarrassment. Good luck!
As others said, hold off for 6-12 months on making any decision-longer if it isn't killing you being considered a JW. No need to rush into anything that is irretrievable. After a death we are vulnerable, and question our decisions-and others will also question your motivations and emotional stability. So give it time.
Again, sorry for your loss. Your dad must have been awesome if he is the reason you kept it quiet until now. I know, as do many, that there are many JWs with great integrity-even if they are confused and it is sometimes misplaced. We have all been there, right???:)
Shelly