As technologies enabling human exploration of beyond LEO targets mature, new strategies are being investigated for the logistics involved in such missions. Optimizing the logistics network for a campaign, rather than focusing on mission-level planning, can result in more efficient architectures. In this work, we propose a campaign-level methodology that will help mission designers quickly explore the tradespace of using SEP (for cargo/propellant delivery) and chemical propulsion (for crew transfers and depot deliveries) by calculating the optimal combinations of these technologies for different arcs. This technique is demonstrated for a campaign that involves a return-to-the-Moon mission using the cis-lunar space as a staging area. Optimal number of depots and their locations are calculated for a few mission profiles and their implications for mission planning are discussed.