I have a SaaS startup that services the marketing and promotion industry which is directed at small businesses, not for regular consumers.
Is Kickstarter a poor platform for this kind of launch? Should we consider another option?
It's not foolish, but it's going to be extremely hard to pull it off. I would consider starting with a beta program so you can have some paid clients to pay for the company's expenses.
After you have some traction, you can raise a seed round.
I would honestly advise against using Kickstarter to launch a Saas product. Unless you can build a really targeted list before hand and then email them. You won't see a ton of organic growth from the Kickstarter platform.