The best strategy is

1. Keep working on that landing page and add more content. Try to interview some influencers, add some facts and statistics, add Q/A section if it is missing

2. Keep working on getting backlinks. There are lots of ways to generate backlinks. If you do #1 WELL your chance of getting strategic backlinks will be higher

Extra Tip! Set up Google Webmasters and monitor or your page is performing in Google over time

If you have any questions would be happy to help