inriching my sandy loam

[charley]

i just set up 3 raised beds 16+16 and filled them with sandy loam soil and i noticed that it has some clay chuncks in it .the soil is acidic.i do have 2 loads of compost 5foot+5foot made from kitchen scraps mowed leaves and coffie grounds to put in it. my questian is do i fix the ph first then add the compost.and what do you recommend to add to the soil.last year was my first garden . i grew 27 different heirlooms. but lacked production and tast