please help! what are some classic, comfortable pieces to increase my dear bf's fashion sense?

currently, weekdays consist of khaki/dress pants, short-sleeve button down shirts, black leather-laced shoes, black socks and matching belt.

weekends are jeans (1 pair of starting-to-fade dark denim + 3 lighter blue), plain t-shirts, polo shirts, 2 cargo shorts and sneakers with white socks (eek!)

oh, accessories include a cell phone with belt holster, and bulging leather wallet in pocket, lol. i don't think the man-purse will fly!

so far, i'm thinking:

1) pants = flat front chinos/ some other 'tropical weight wool'?; dark denim straight/bootcut (brands?)

2) shirts = wrinkle-resistant, short sleeve button down for work

3) shorts = bermuda (khaki, stone and/or brown?)

4) shoes = leather fisherman-type sandals (durable brands with moisture wicking + 8 hr. performance?); fashion sneakers (brands/styles?); brown
leather shoes for work?

he is a very frugal man, and would never buy something as 'frivolous' as clothes/shoes for himself i gifted him with an authentic navy pea coat for fall/winter (which he wore ALL the time...and paid me back, heehee), along with a few others with my guidance (ie, dark denim, dressy shirt for dinner/parties, nice black laced leather shoes for work, etc...)

i think he'd look smashing (and not at all awkward) in a euro-inspired, classic wardrobe. our dream honeymoon would be paris, france and it would be fun to at least recreate a reasonable, functioning frenchman's look in lieu of actually being there!

he has black hair, dark brown eyes, olive complexion, fit-average build, a little soft in the tummy because we love to cook/eat together

any game plan strategies? good deals? priorities?

thanks so much. can't wait to hear what you think.