The part of the sentence "we plan to visit" is correct and usable in written English.
You can use it when you want to express your plans for a future visit. Example: We plan to visit the Grand Canyon during our summer vacation.
We plan to visit the Cognac region in western France.
We plan to visit Turkey and some of the Greek islands next summer with our grandchildren, ages 13 and 10.
Neither of us can imagine living there, not because New York is not wonderful (we plan to visit again), but because it is so overwhelming.
If funding is available for the project in the spring of 2018 we plan to visit the release sites, carrying frozen BMSB sentinel egg clusters to the field to lure the Samurai wasp into visiting and parasitizing these eggs.
We plan to visit 13 countries in 6 months.
Later today, we plan to visit the local park as well as the downtown pedestrian mall.
Rather, we planned to visit national parks and some friends, concentrating on eating miles rather than on eating.
True to the spirit of the man some credit with inventing eco-towns, we planned to visit Le Corbusier's four best French buildings without flying or driving.
We planned to visit him and Susan in their house in Hammersmith as soon as the builders (yes, the builders) had moved out.
What's more, this trip promised educational value for both young and old; we planned to visit as many of the National Trust's stately homes nearby as possible.
Way down at the bottom, past the sheer walls and fantastic volcanic spires overgrown with dense greenery, were the beaches and caves that we planned to visit in only a couple of days.
