Well, this is a question which every blogger should find his own answer. There are thousands of bloggers which were started to become a problogger, but failed in the short term. Problogging is  not a get rich quick scheme. It takes time and patience to succeed in problogging. Rome wasn’t built in one day. You can not expect to become a problogger all of a sudden. You need to have a long term strategy and planning.

My suggestion is to start as a part time blogger. If you can grow your blogging income, then you may become a problogger within a few year’s time. Then you can switch to full time problogging.