A method for processing a hydrocarbon feedstock, comprising: mixing a mineral hydrocarbon feed having a T5 boiling point of at least 340°C and a sulfur content from 200 to 20000 wppm with a conversion stage effluent having a sulfur content of 50 wppm or less to produce a mixed hydrocarbon feed; hydrotreating the mixed hydrocarbon feed in a hydrotreating stage by exposing the mixed hydrocarbon feed to a hydrotreating catalyst under effective hydrotreatment conditions to produce a hydrotreated effluent having a sulfur content of 50 wppm or less, wherein the effective hydrotreatment conditions comprise an LHSV from 0.3 hr -1 to 5.0 hr -1, a total pressure from 500 psig (3.4 MPag) to 3000 psig (20.7 MPag), a hydrogen-containing treat gas ratio from 100 scf/bbl (17 Nm 3 /m 3) to 5000 scf/bbl (840 Nm 3 /m 3), and a temperature from 500°F (260°C) to 800°F (427°C); fractionating the hydrotreated effluent to produce at least a kerosene fraction having a sulfur content of 10 wppm or less, a diesel fraction having a sulfur content of 20 wppm or less, and a bottoms fraction; forming a bottoms feed fraction and a lubricant basestock from the bottoms fraction, the bottoms feed fraction comprising from 25% to 90% of the bottoms fraction and having a T5 boiling point of at least 355°C; and converting the bottoms feed fraction in a conversion stage by exposing the bottoms feed fraction to a dewaxing catalyst under effective conversion conditions to produce the conversion stage effluent, wherein the effective conversion conditions comprise a temperature from 200°C to 450°C, a total pressure from 5 barg (0.5 MPag) to 300 barg (30 MPag), a hydrogen-containing treat gas ratio from 100 scf/bbl (17 Nm 3 /m 3) to 5000 scf/bbl (840 Nm 3 /m 3), and an LHSV from 0.05 hr -1 to 10 hr -1; wherein a boiling point profile of the hydrotreated effluent corresponds to at least 40% conversion of the hydrocarbon feed relative to a conversion threshold, the conversion threshold corresponding to the T5 boiling point of the bottoms feed fraction. mixing a mineral hydrocarbon feed having a T5 boiling point of at least 340°C and a sulfur content from 200 to 20000 wppm with a conversion stage effluent having a sulfur content of 50 wppm or less to produce a mixed hydrocarbon feed; hydrotreating the mixed hydrocarbon feed in a hydrotreating stage by exposing the mixed hydrocarbon feed to a hydrotreating catalyst under effective hydrotreatment conditions to produce a hydrotreated effluent having a sulfur content of 50 wppm or less, wherein the effective hydrotreatment conditions comprise an LHSV from 0.3 hr -1 to 5.0 hr -1, a total pressure from 500 psig (3.4 MPag) to 3000 psig (20.7 MPag), a hydrogen-containing treat gas ratio from 100 scf/bbl (17 Nm 3 /m 3) to 5000 scf/bbl (840 Nm 3 /m 3), and a temperature from 500°F (260°C) to 800°F (427°C); fractionating the hydrotreated effluent to produce at least a kerosene fraction having a sulfur content of 10 wppm or less, a diesel fraction having a sulfur content of 20 wppm or less, and a bottoms fraction; forming a bottoms feed fraction and a lubricant basestock from the bottoms fraction, the bottoms feed fraction comprising from 25% to 90% of the bottoms fraction and having a T5 boiling point of at least 355°C; and converting the bottoms feed fraction in a conversion stage by exposing the bottoms feed fraction to a dewaxing catalyst under effective conversion conditions to produce the conversion stage effluent, wherein the effective conversion conditions comprise a temperature from 200°C to 450°C, a total pressure from 5 barg (0.5 MPag) to 300 barg (30 MPag), a hydrogen-containing treat gas ratio from 100 scf/bbl (17 Nm 3 /m 3) to 5000 scf/bbl (840 Nm 3 /m 3), and an LHSV from 0.05 hr -1 to 10 hr -1;