A long walk before work does not solve this. It helps, and it is worth doing, but a dog rated 2 out of 5 on alone-time tolerance is not primarily tired — it is attached. Welsh Springer Spaniels are documented as Loyal, and the practical translation of that word is a dog that struggles with an empty house rather than one that sleeps through it.
So the realistic Charlotte budget for this breed includes coverage on workdays: a midday walker three to five times a week, or daycare two or three days. Priced honestly, that is frequently the largest single recurring cost of ownership here — larger than food, larger than routine vet care, and completely invisible in a cost-of-living index.
The useful way to think about it is as a fixed cost decided at purchase rather than a discretionary one decided monthly. If the household cannot support roughly $200 to $500 a month of coverage or an equivalent arrangement — a hybrid schedule, a neighbour, a second adult at home some days — this is the breed detail to weigh before the puppy arrives, not after.