Great house. I'd probably paint the room a little lighter and remove the carpet and hope there is hardwood underneath or install it. Then I'd rent "North by Northwest" and pay particular attention the Vandamm's mountain house towards the end of the movie. Don't be too dogmatic about the MCM as clean styles like shaker, mission and some contemporary can blend in well too. Here are some websites I found useful https://www.designpublic.com https://www.danishdesignstore.com https://hivemodern.com http://www.dwr.com https://stickley.com/OurProducts.cfm?Collection=Mission https://www.blakhausfurniture.com and here is a combo of mid-century, shaker and mission in my living room I think a prairie settle would look great in your home https://www.stickley.com/OurProducts_Details.cfm?id=2818&q=prairie&view=single&finish=

First off…any identifying manufacturing tags on the sofa? I am all for refreshing vintage piece, but only up to a point ($$). The sofa looks tired. The cushions need to be re-wrapped and the skirt has to go. How are the legs? Good enough shape to be exposed? I am going to say 1950’s for the age.

The look of the little table works with the space. A pair of comfortable wood chairs with separate cushions you can change out is all you really need unless you're spending a lot of time sitting in them -- on the computer or visiting with a friend ... then you might want chairs with more upholstery and more cushion comfort. If you're choosing the plain wood chairs, make sure the wood back is made of the wider flat boards that are curved ( rather than vertical round dowels ). Have had both and the flat curved boards will be a lot more comfortable. I like the high back for extended sitting and these kinds of seats are comfortable and easily covered when need to be changed. You need to scroll over the page left of the wording to get the chairs to appear with this link: https://www.amishoriginals.com/shop/shaker-ladder-11320/ Or you might consider a pair of saddle stools for the table and bar. Do sit in whatever you are considering buying. https://www.google.com/search?q=wide+scooped+wood+saddle+stools&client=firefox-b-1-d&source=lnms&tbm=isch&sa=X&ved=2ahUKEwiC1Jj276btAhURqlkKHfRlD9kQ_AUoAnoECAYQBA&biw=1366&bih=654 Or you might consider a pair of saddle stools for the table and/or bar. Do sit in whatever you are considering buying. https://www.google.com/search?q=wide+scooped+wood+saddle+stools&client=firefox-b-1-d&source=lnms&tbm=isch&sa=X&ved=2ahUKEwiC1Jj276btAhURqlkKHfRlD9kQ_AUoAnoECAYQBA&biw=1366&bih=654 Like your art and the splash of bright colors. A large framed vertical poster on the wall (no wider than your bar/countertop) would work left of the tv across from the bar/countertop if you have a special interest you want represented in the room -- some place or pastime or hobby or team you support. Like the idea of the "window": https://www.zazzle.com/fake_window_poster-228195308274074493?rf=238840279726397180&tc=EAIaIQobChMI6uzEn_mm7QIVgrKGCh0u0gGnEAQYBSABEgJ2aPD_BwE&utm_source=google&utm_medium=cpc&utm_campaign=us_shopping&utm_term=z228195308274074493&ca_chid=2001810&ca_source=gaw&ca_ace=&ca_nw=g&ca_dev=c&ca_pl=&ca_pos=&ca_cid=303811431291&ca_agid=59506835414&ca_caid=1600127652&ca_adid=303811431291&ca_kwt=&ca_mt=&ca_fid=&ca_tid=aud-540000688047:pla-940848662132&ca_lp=9011011&ca_li=&ca_devm=&ca_plt=&gclsrc=aw.ds&gclid=EAIaIQobChMI6uzEn_mm7QIVgrKGCh0u0gGnEAQYBSABEgJ2aPD_BwE

Will your clock fit on the wall behind the chaise? I wouldn't be in a hurry to fill your hutch - collect things that call to you. Some plants would be nice - maybe one on top of the hutch on the sunnier side that drapes (spider plants aren't fussy) and some floor planters. Love your vinyl and analog stero equipment! Congratulations on your new home. You will get some good feedback from this group. Best wishes!!