Do you have established clients? If so, are they going to find you with your new name?

I do think your name is too long (particularly for a domain name... and you should have a website to show off the quality of your work). Don't forget, you could also use a tag line in addition to your name (e.g., Lonnie's Lawn Services .... Customer Service, Quality, Professionalism). You could consider something like:
city name Lawn Services
Moments notice lawn services
At your door law services

Best of luck! :)

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