Look into jobber It’s one of the more popular CRM in the industry.
It will do what you need it to do for an LCO of that size and it will scale if you decide to bigger.
Fees are an apart of the business and as long as people know it coming no one cares. Just be upfront with your customers and don’t gouge them. Everyone knows about the 3% and if they complain, fire them. At the size you are at you can replace them with less headaches. Put them all on auto bill and roll in the cashflow

Look into a Simple IRA instead of 401k. The fees and oversight make a 401k expensive for small business’s. The Simple IRA is set up for smaller businesses.
You are capped at 3% employer contribution.