I debated between a SUP and a kayak 2 years ago. A SUP looks simpler but I'm glad I ended up going with a kayak for fishing. That does look like a good option though and a decent price as well.
I know what you're saying about feeling wierd without the PFD on, it's like a Thundershirt for dogs

USCG considers a paddleboard a vessel now, so they are required to carry a PFD outside of surf/swimming zones but I never see them in compliance around Dana Pt.
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Hobie PA 14 ¸.·´¯`·.´¯`·.¸¸.·´¯`·.¸><(((º>
Jackson Kraken ¸.·´¯`·.¸.·´¯`·.´¯`·.¸¸.·´¯`·.¸><(((º>
Malibu X-Factor ¸.·´¯`·.´¯`·.¸¸.·´¯`·.¸><(((º>
Malibu Stealth-12 ¸.·´¯`·.´¯`·.¸¸.·´¯`·.¸><(((º>
Its not a spelling B its a fishing B
~yakjoe