You can use dome for seedling , they create a cozy atmmosphere helping a lot to deal with moisture fluctuation. But you must avoid direct heavy sun/light , they can turn your dome into a sauna.
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Cheap solution exist to monitor your soil moisture and PH level. A couple of $ can help you to get some good information.
https://images.homedepot-static.com/productImages/4f24c916-2f07-4eee-bb82-25b47f886eab/svn/hydro-crunch-moisture-sensors-d940010500-64_1000.jpg
Some strain like to start into large container but some give better result using small starting media like jiffy or rockwoll, moving to a 1L container before the final/big one.
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