You would probably be better off working and building links from sites in same type of industry.
Doing what your proposing can get you penalized by google...it has been done before on an industrial scale....
1. Problem 1 all the domains would need different registration details etc. as google checks this stuff....google see`s domain privacy on reg details - raises red flag...
2. All domains would need to be hosted on different account/ different servers. Google can spot this too if all regged to same person and on same server. Red flags you.
If the keywords you are after are not competitive it could work, for a bit...you would probably be better though developing content on your first site around these keywords...
Only my view, somebody with more experience in area might tell you how its done properly.