Are my baseball plans reasonable?

I am off to Japan in April. The plan is Fukuoka Softbank Hawks v Lions Saturday 5th April, Orix Buffaloes v Hawks Tuesday 8th, Hanshin Tigers v Swallows Wednesday 9th, Chunichi Dragons v Hiroshima Carp Thursday 10th and finally Hiroshima Carp v Giants Friday 11th.

If I'm on the ball and I try to get tickets as soon as they go on public sale do I stand a chance? My concerns are the Tigers and Carp. Hawks, Buffaloes and Dragons should be easy enough I think.

If I'm wasting my time even thinking about this is possible let me know.