I will be glad to help you with this!

Taking into account the information that you just provided me, given that you don't want to use a brush to do this work and are indecisive of which type of sprayer to use, let's review a list of pros and cons for each and I will take into consideration that you have never used a sprayer before to give you a final recommendation.

- Pros of conventional sprayer: 
...

-Cons of conventional sprayer: 
...


- Pros of airless sprayer: 
...

-Cons of airless sprayer:
...

-Pros of HVLP sprayer:
...

- Cons of HVLP sprayer:
...


Taking into consideration this information you can now make an informed decision on which to use according to your own criteria. However, I would say that given your inexperience with this type of tool you should go for "easiest tool" for "these reasons".

I hope that my answer has helped you to make your decision. If you have more questions related to painting, tools or anything of the sort, don't hesitate to ask! Good luck!
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