Just curious... why do you have a 7/16" shackle connected to a 3/4" chain? Typically, you go up a size on the shackle, which would be a 7/8" shackle IIRC. A 7/16" shackle is a weak point in your design—it has a SWL of only 3000 lbs IIRC. I don't even think two 5/8" shackles will fit through a 7/16" shackle.
The 5/8" shackles have a working load of 6500 lbs. or so.
The pendants have a BL of 23,000 lbs and are rated for boats 23-31' LOA... they're a bit undersized for your boat. Also, I'd recommend getting two of different lengths... so that one acts as a secondary pendant and will take the load if the primary, shorter pendant fails. Assuming a working load of 6500 lbs...these are not even 3:1 in terms of safety margin. You really should be going with a 1" pendant, which is designed for boats 27-41' LOA, and have a breaking load of 42000 lbs. or about 6.5:1.
Also, you should have floats on the pendants.
Ideally, the whole mooring system should be fairly well matched in terms of safe working loads and such. Having a 7/16" shackle and only 3/4" pendants in the system you've setup, with 3/4" chain and 5/8" shackles for the terminal end of the pendants is a bit odd. While I don't think you'll get really massive storm surge in your anchorage, if you're going to do this, you might as well size everything properly.
Just curious, what is the draft on your P35. With only 6' at MLW...any kind of storm swell or wave action is going to possibly cause your boat to bottom out, unless you've got a much shallower draft than I think you do.
BTW, I'd point out that I'm using 3/4" pendants on a boat that only weighs 4000 lbs. or so and is only 28' LOA and I'm using 1/2" shackles for the mooring attachment and the boat is moored in 10'+ feet of water but only draws 16" or so boards up.