What's the wattage of the mosaic mini pendant? I would think using the light that mimics your vent hood would probably look okay if the sink isn't too close to the peninsula, assuming the wattage is high enough of course. The only concern I would have is a pendant over me instead of over the sink area; might not give appropriate light. Is the vent working? If not, could you take it out? Or maybe doing two smaller recessed lights on either side of that vent (depending how big it is across your sink area) would work better; then you would have the light properly over the sink? Hope those thoughts are of some help...

Just confirming I understand: 27” from the wall is the first one, and 27” from that is the second one? Will this allow the cabinet door to clear? And then Centered on countertop including the overhang?

Typical height over a table is 30”, and island/peninsula is 36”. Top of counter to underside of fixture.

Kitchen design image...... https://my-kitchen.howdens.com/plan/JW95800730083asI https://my-kitchen.howdens.com/plan/JW95800730083asI Proposed lighting links.... https://www.wilko.com/en-uk/wilko-large-glass-pewter-industrial-pendant-light-shade/p/0436639 https://www.wilko.com/en-uk/wilko-triple-glass-pewter-industrial-pendant-light-shade/p/0436640