The form ‘will just have to‘ is listed at C1 in the English Vocabulary Profile.
A search in iWeb:
1 WILL JUST HAVE TO WAIT 1279
2 WILL JUST HAVE TO GET 252
3 WILL JUST HAVE TO SEE 246
4 WILL JUST HAVE TO KEEP 223
5 WILL JUST HAVE TO MAKE 199
6 WILL JUST HAVE TO GO 186
7 WILL JUST HAVE TO TAKE 173
8 WILL JUST HAVE TO LIVE 161
9 WILL JUST HAVE TO DEAL 152
10 WILL JUST HAVE TO TRY 136
11 WILL JUST HAVE TO FIND 115
12 WILL JUST HAVE TO ACCEPT 97
13 WILL JUST HAVE TO LEARN 85
14 WILL JUST HAVE TO USE 84
15 WILL JUST HAVE TO PUT 82
16 WILL JUST HAVE TO WORK 79
17 WILL JUST HAVE TO WATCH 72
18 WILL JUST HAVE TO PAY 71
19 WILL JUST HAVE TO HOPE 69
20 WILL JUST HAVE TO COME 68
We promised the Cadillac to Carlton and Rebecca tonight,
so William‘s cousin will just have to come to pick you up himself.
21 WILL JUST HAVE TO LOOK 58
22 WILL JUST HAVE TO BUY 55
23 WILL JUST HAVE TO AGREE 55
24 WILL JUST HAVE TO SETTLE 52
25 WILL JUST HAVE TO FIGURE 47
B1:
accept, figure
B2:
deal, settle