Evaluate multimodal connectivity (rail siding, trunk roads), proximity to customs checkpoints, on-site cargo handling equipment, and direct relationships with national rail and trucking carriers. Also confirm local last-mile partner coverage and seasonal capacity constraints that affect northern routes.

Prioritise 3PLs with modern WMS integrations (API or EDI), SKU-level visibility, returns management, kitting and pick/pack flexibility. Request SLA definitions, reporting cadence, onboarding timelines and references for similar eCommerce volumes to validate operational fit.

Negotiate transparent storage (per pallet/rack), handling (pick, pack, kitting), inbound receiving, value-added services, and minimum throughput clauses. Clarify fuel surcharges, peak-season premiums, and customs brokerage fees to model true cost-to-serve for each channel.

Plan for extreme seasonal weather that can impact transit reliability, potential rail congestion during peak periods, and inventory lead-times for cross-border lanes. Build buffer stock strategies, contingency carriers and defined escalation paths into contracts to mitigate disruption.