Hey OP. You do what you think is right for you. Many DIY but like you, many don't want the hassle, keeping tools around, having reasonable space to actually do it, and store your tools. It is an easy task but those guys who say it takes 20 minutes have been doing it forever, have the space, the tools, and the desire to DIY. Realistically, an hour minimum to do it and then put everything away. Then you have to get rid of the old oil. So there is more to it than popping a plug and spinning a filter off and on.
Getting your own oil and filter is good idea if you intend to take it to a shop. A quality synthetic and the PureOne filter is a good idea.
Research the oil threads here.
Which oil should I use